Bump hugo-extended to ^0.155.1 (fixes warnidf compatibility)

The npm hugo-extended devDependency was pinned at ^0.121.0, so Netlify's
auto npm install was putting Hugo 0.121.x on the PATH ahead of any
HUGO_VERSION-resolved binary. That's why HUGO_VERSION appeared to be
ignored — it wasn't, the npm-installed Hugo just took precedence.

Bumping to ^0.155.1 brings npm-installed Hugo above the 0.123 cutoff
where warnidf landed, so the hugo-theme-component-ical module builds.

Also reverts the wget+dpkg workaround from netlify.toml — no longer
needed now that the npm-installed Hugo is current.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: HeyItsGilbert

netlify.toml

@@ -1,5 +1,5 @@
 [build]
-  command = "wget -O /tmp/hugo.deb https://github.com/gohugoio/hugo/releases/download/v${HUGO_VERSION}/hugo_extended_${HUGO_VERSION}_linux-amd64.deb && sudo dpkg -i /tmp/hugo.deb && hugo --minify"
+  command = "hugo --minify"
   publish = "public"
 
 [build.environment]

package.json

@@ -9,7 +9,7 @@
     "preview": "hugo server --environment production"
   },
   "devDependencies": {
-    "hugo-extended": "^0.121.0",
+    "hugo-extended": "^0.155.1",
     "node-fetch": "^3.3.2"
   }
 }